Could you fix alphabetical sorting per continent? Would also be great if papua-nowa gwinea could be written without hyphen (-). Thank you for sharing great work! Also really good way to learning polish! Dziekuje!

Awesome quiz! Finally managed to get all of them on my billionth try :-P
However, it would be even more awesome if the quiz accepted some abbreviations: RPA for Republika Południowej Afryki (South Africa), ZEA for Zjednoczone Emiraty Arabskie, USA for Stany Zjednoczone, and maybe "pld" for "poludniowa" in "pln" for "półncona" for the Koreas. These are all extremely common abbreviations in Poland and really frustrating to type.
But anyways, thanks for the quiz :P